<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>发现优质供给 | SocialSupply</title>
    <!-- Bootstrap 5 CSS -->
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
    <!-- Font Awesome -->
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    
    <style>
        :root {
            --primary-color: #3b82f6;
            --secondary-color: #64748b;
            --light-bg: #f8fafc;
            --card-shadow: 0 2px 8px rgba(0,0,0,0.08);
            --hover-shadow: 0 4px 12px rgba(0,0,0,0.12);
            --transition-speed: 0.3s;
        }
        
        body {
            font-family: 'Inter', system-ui, sans-serif;
            background-color: #f1f5f9;
            color: #1e293b;
        }
        
        .container {
            max-width: 1280px;
        }
        
        /* 导航栏样式 */
        .navbar {
            background-color: white;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            padding: 0.75rem 0;
        }
        
        .logo {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary-color);
            text-decoration: none;
        }
        
        .search-bar {
            max-width: 500px;
            width: 100%;
        }
        
        .nav-icon {
            font-size: 1.25rem;
            color: var(--secondary-color);
            transition: color var(--transition-speed);
        }
        
        .nav-icon:hover {
            color: var(--primary-color);
        }
        
        /* 筛选栏 */
        .filters {
            background-color: white;
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            box-shadow: var(--card-shadow);
        }
        
        .filter-tabs .nav-link {
            color: var(--secondary-color);
            border: none;
            padding: 0.5rem 1rem;
            font-weight: 500;
        }
        
        .filter-tabs .nav-link.active {
            color: var(--primary-color);
            background-color: rgba(59, 130, 246, 0.1);
            border-radius: 4px;
        }
        
        .filter-options {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-top: 0.75rem;
        }
        
        .filter-btn {
            background-color: var(--light-bg);
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            color: var(--secondary-color);
            font-size: 0.9rem;
            transition: all var(--transition-speed);
        }
        
        .filter-btn:hover, .filter-btn.active {
            background-color: var(--primary-color);
            color: white;
        }
        
        /* 标题样式 */
        .section-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .section-title i {
            color: var(--primary-color);
        }
        
        /* 通用供给卡片样式 */
        .supply-card {
            background-color: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: transform var(--transition-speed), box-shadow var(--transition-speed);
            margin-bottom: 1.5rem;
        }
        
        .supply-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--hover-shadow);
        }
        
        .supply-author {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.75rem 1rem;
        }
        
        .author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            object-fit: cover;
        }
        
        .author-info {
            flex: 1;
        }
        
        .author-name {
            font-weight: 500;
            font-size: 0.95rem;
            line-height: 1;
        }
        
        .post-time {
            font-size: 0.8rem;
            color: var(--secondary-color);
        }
        
        .supply-content {
            padding: 0 1rem 1rem;
        }
        
        .supply-title {
            font-weight: 600;
            margin-bottom: 0.5rem;
            transition: color var(--transition-speed);
        }
        
        .supply-card:hover .supply-title {
            color: var(--primary-color);
        }
        
        .supply-description {
            color: var(--secondary-color);
            font-size: 0.95rem;
            margin-bottom: 1rem;
            line-height: 1.5;
        }
        
        .supply-stats {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            font-size: 0.85rem;
            color: var(--secondary-color);
        }
        
        .stat-item {
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }
        
        .supply-actions {
            display: flex;
            justify-content: space-around;
            padding: 0.75rem 0;
            border-top: 1px solid #f1f5f9;
        }
        
        .action-btn {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            background: none;
            border: none;
            color: var(--secondary-color);
            font-size: 0.85rem;
            padding: 0.25rem 0.75rem;
            border-radius: 4px;
            transition: all var(--transition-speed);
        }
        
        .action-btn:hover {
            background-color: rgba(59, 130, 246, 0.1);
            color: var(--primary-color);
        }
        
        .action-btn.liked {
            color: #ef4444;
        }
        
        .action-btn.saved {
            color: #f59e0b;
        }
        
        /* 多图布局样式 */
        .image-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 4px;
            margin-bottom: 1rem;
        }
        
        .image-grid-3 {
            grid-template-columns: repeat(2, 1fr);
        }
        
        .image-grid-3 img:first-child {
            grid-column: span 2;
            grid-row: span 2;
        }
        
        .supply-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 1/1;
        }
        
        .single-image {
            width: 100%;
            height: auto;
            max-height: 400px;
            object-fit: cover;
            margin-bottom: 1rem;
            border-radius: 4px;
        }
        
        /* 无图供给样式 */
        .no-image-card {
            border-left: 4px solid var(--primary-color);
        }
        
        /* 大卡片布局样式 */
        .large-card {
            display: flex;
            flex-direction: column;
        }
        
        @media (min-width: 768px) {
            .large-card {
                flex-direction: row;
            }
            
            .large-card .image-container {
                flex: 0 0 40%;
            }
            
            .large-card .supply-content-container {
                flex: 1;
                display: flex;
                flex-direction: column;
            }
        }
        
        .large-card .image-container {
            position: relative;
        }
        
        .large-card .supply-image {
            aspect-ratio: 4/3;
            max-height: none;
            border-radius: 0;
        }
        
        .large-card .image-count {
            position: absolute;
            bottom: 10px;
            right: 10px;
            background-color: rgba(0,0,0,0.6);
            color: white;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
        }
        
        .large-card .supply-content {
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        
        .large-card .supply-description {
            flex: 1;
        }
        
        /* 网格布局样式 */
        .grid-layout {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        
        .grid-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .grid-card .image-container {
            position: relative;
            overflow: hidden;
            aspect-ratio: 1/1;
        }
        
        .grid-card .image-count {
            position: absolute;
            top: 8px;
            right: 8px;
            background-color: rgba(0,0,0,0.6);
            color: white;
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 0.75rem;
        }
        
        .grid-card .supply-content {
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        
        .grid-card .supply-description {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        
        /* 瀑布流布局 */
        .masonry-layout {
            column-count: 1;
            column-gap: 1.5rem;
        }
        
        @media (min-width: 768px) {
            .masonry-layout {
                column-count: 2;
            }
        }
        
        @media (min-width: 992px) {
            .masonry-layout {
                column-count: 3;
            }
        }
        
        .masonry-card {
            break-inside: avoid;
            margin-bottom: 1.5rem;
        }
        
        .masonry-card .image-container {
            overflow: hidden;
        }
        
        .masonry-card .supply-image {
            aspect-ratio: auto;
            transition: transform var(--transition-speed);
        }
        
        .masonry-card:hover .supply-image {
            transform: scale(1.03);
        }
        

        /* 加载更多按钮 */
        .load-more {
            display: block;
            margin: 2rem auto;
            background-color: white;
            border: 1px solid var(--primary-color);
            color: var(--primary-color);
            padding: 0.75rem 2rem;
            border-radius: 6px;
            font-weight: 500;
            transition: all var(--transition-speed);
        }
        
        .load-more:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        .load-more.loading {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
    </style>
</head>
<body>
    <!-- 导航栏 -->
    <nav class="navbar navbar-expand-lg">
        <div class="container">
            <a href="#" class="logo">SocialSupply</a>
            
            <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarContent">
                <i class="fas fa-bars"></i>
            </button>
            
            <div class="collapse navbar-collapse justify-content-center" id="navbarContent">
                <div class="d-flex search-bar">
                    <input type="text" class="form-control" placeholder="搜索供给、用户或标签...">
                    <button class="btn btn-primary ms-2">
                        <i class="fas fa-search"></i>
                    </button>
                </div>
            </div>
            
            <div class="d-flex gap-3 ms-3">
                <a href="#" class="nav-link nav-icon">
                    <i class="fas fa-home"></i>
                </a>
                <a href="#" class="nav-link nav-icon">
                    <i class="fas fa-bell"></i>
                </a>
                <a href="#" class="nav-link nav-icon">
                    <i class="fas fa-user-circle"></i>
                </a>
            </div>
        </div>
    </nav>
    
    <!-- 主内容区 -->
    <div class="container py-5">
        <!-- 筛选栏 -->
        <div class="filters">
            <ul class="nav filter-tabs" role="tablist">
                <li class="nav-item" role="presentation">
                    <button class="nav-link active" id="all-tab" data-bs-toggle="tab" data-bs-target="#all" type="button" role="tab">全部</button>
                </li>
                <li class="nav-item" role="presentation">
                    <button class="nav-link" id="popular-tab" data-bs-toggle="tab" data-bs-target="#popular" type="button" role="tab">热门</button>
                </li>
                <li class="nav-item" role="presentation">
                    <button class="nav-link" id="recent-tab" data-bs-toggle="tab" data-bs-target="#recent" type="button" role="tab">最新</button>
                </li>
                <li class="nav-item" role="presentation">
                    <button class="nav-link" id="following-tab" data-bs-toggle="tab" data-bs-target="#following" type="button" role="tab">关注中</button>
                </li>
            </ul>
            
            <div class="filter-options">
                <button class="filter-btn active">全部类别</button>
                <button class="filter-btn">数字产品</button>
                <button class="filter-btn">实体商品</button>
                <button class="filter-btn">服务</button>
                <button class="filter-btn">创意作品</button>
                <button class="filter-btn">二手物品</button>
            </div>
        </div>
        
        <!-- 大图卡片布局 -->
        <section class="mb-8">
            <h2 class="section-title">
                <i class="fas fa-star"></i> 精选推荐
            </h2>
            
            <div class="supply-card large-card">
                <div class="image-container">
                    <img src="https://picsum.photos/800/600?random=1" alt="手工皮革笔记本展示" class="supply-image">
                </div>
                
                <div class="supply-content-container">
                    <div class="supply-author">
                        <img src="https://picsum.photos/100/100?random=101" alt="张小匠的头像" class="author-avatar">
                        <div class="author-info">
                            <div class="author-name">张小匠</div>
                            <div class="post-time">2小时前</div>
                        </div>
                        <button class="btn btn-sm btn-primary">关注</button>
                    </div>
                    
                    <div class="supply-content">
                        <h3 class="supply-title">手工皮革笔记本 - 个性化定制</h3>
                        <p class="supply-description">
                            全手工制作的真皮笔记本，采用优质头层牛皮，质感细腻，经久耐用。可定制封面压花文字，内页采用环保纸张，适合书写和收藏。每本都是独一无二的艺术品，是自用或送礼的绝佳选择。支持定制尺寸和内页形式，下单后7天内发货。
                        </p>
                        
                        <div class="supply-stats">
                            <div class="stat-item">
                                <i class="fas fa-eye"></i>
                                <span>2.5k 浏览</span>
                            </div>
                            <div class="stat-item">
                                <i class="fas fa-comment"></i>
                                <span>128 评论</span>
                            </div>
                            <div class="stat-item">
                                <i class="fas fa-bookmark"></i>
                                <span>356 收藏</span>
                            </div>
                        </div>
                    </div>
                    
                    <div class="supply-actions">
                        <button class="action-btn" id="like1">
                            <i class="far fa-heart"></i>
                            <span>点赞 (528)</span>
                        </button>
                        <button class="action-btn">
                            <i class="far fa-comment"></i>
                            <span>评论</span>
                        </button>
                        <button class="action-btn" id="save1">
                            <i class="far fa-bookmark"></i>
                            <span>收藏</span>
                        </button>
                        <button class="action-btn">
                            <i class="fas fa-share-alt"></i>
                            <span>分享</span>
                        </button>
                    </div>
                </div>
            </div>
        </section>
        
        <!-- 多图布局 -->
        <section class="mb-8">
            <h2 class="section-title">
                <i class="fas fa-th-large"></i> 热门供给
            </h2>
            
            <div class="supply-card">
                <div class="supply-author">
                    <img src="https://picsum.photos/100/100?random=102" alt="李摄影师的头像" class="author-avatar">
                    <div class="author-info">
                        <div class="author-name">李摄影师</div>
                        <div class="post-time">昨天 15:30</div>
                    </div>
                    <button class="btn btn-sm btn-outline-primary">已关注</button>
                </div>
                
                <div class="supply-content">
                    <h3 class="supply-title">城市风光摄影作品集 - 可商用授权</h3>
                    <p class="supply-description">
                        最新城市风光摄影集，包含20张高清城市天际线照片，适合商业宣传、网站设计和印刷品使用。所有作品均提供商业使用授权，购买后可获得不同尺寸的文件。
                    </p>
                    
                    <div class="image-grid image-grid-3">
                        <img src="https://picsum.photos/600/600?random=10" alt="城市摄影作品1" class="supply-image">
                        <img src="https://picsum.photos/600/600?random=11" alt="城市摄影作品2" class="supply-image">
                        <img src="https://picsum.photos/600/600?random=12" alt="城市摄影作品3" class="supply-image">
                        <div class="supply-image" style="background-color: #333; color: white; display: flex; align-items: center; justify-content: center;">
                            <span>+17 张</span>
                        </div>
                    </div>
                    
                    <div class="supply-stats">
                        <div class="stat-item">
                            <i class="fas fa-eye"></i>
                            <span>1.8k 浏览</span>
                        </div>
                        <div class="stat-item">
                            <i class="fas fa-comment"></i>
                            <span>94 评论</span>
                        </div>
                        <div class="stat-item">
                            <i class="fas fa-bookmark"></i>
                            <span>278 收藏</span>
                        </div>
                    </div>
                </div>
                
                <div class="supply-actions">
                    <button class="action-btn" id="like2">
                        <i class="far fa-heart"></i>
                        <span>点赞 (342)</span>
                    </button>
                    <button class="action-btn">
                        <i class="far fa-comment"></i>
                        <span>评论</span>
                    </button>
                    <button class="action-btn" id="save2">
                        <i class="far fa-bookmark"></i>
                        <span>收藏</span>
                    </button>
                    <button class="action-btn">
                        <i class="fas fa-share-alt"></i>
                        <span>分享</span>
                    </button>
                </div>
            </div>
        </section>
        
        <!-- 网格布局 -->
        <section class="mb-8">
            <h2 class="section-title">
                <i class="fas fa-th"></i> 为你推荐
            </h2>
            
            <div class="grid-layout">
                <!-- 网格卡片1 - 单图 -->
                <div class="supply-card grid-card">
                    <div class="image-container">
                        <img src="https://picsum.photos/600/600?random=20" alt="手绘插画服务" class="supply-image">
                    </div>
                    
                    <div class="supply-author">
                        <img src="https://picsum.photos/100/100?random=103" alt="王插画的头像" class="author-avatar">
                        <div class="author-info">
                            <div class="author-name">王插画</div>
                            <div class="post-time">3天前</div>
                        </div>
                    </div>
                    
                    <div class="supply-content">
                        <h3 class="supply-title">个性化手绘插画 - 头像/封面设计</h3>
                        <p class="supply-description">
                            提供个性化手绘插画服务，可用于头像、社交媒体封面、书籍插图等场景。风格多样，支持定制需求。
                        </p>
                        
                        <div class="supply-stats">
                            <div class="stat-item">
                                <i class="fas fa-eye"></i>
                                <span>867 浏览</span>
                            </div>
                            <div class="stat-item">
                                <i class="fas fa-comment"></i>
                                <span>42 评论</span>
                            </div>
                        </div>
                    </div>
                    
                    <div class="supply-actions">
                        <button class="action-btn" id="like3">
                            <i class="far fa-heart"></i>
                            <span>156</span>
                        </button>
                        <button class="action-btn" id="save3">
                            <i class="far fa-bookmark"></i>
                            <span>收藏</span>
                        </button>
                    </div>
                </div>
                
                <!-- 网格卡片2 - 多图 -->
                <div class="supply-card grid-card">
                    <div class="image-container">
                        <div class="image-grid">
                            <img src="https://picsum.photos/600/600?random=21" alt="手工饰品1" class="supply-image">
                            <img src="https://picsum.photos/600/600?random=22" alt="手工饰品2" class="supply-image">
                        </div>
                        <div class="image-count">+3</div>
                    </div>
                    
                    <div class="supply-author">
                        <img src="https://picsum.photos/100/100?random=104" alt="刘手工的头像" class="author-avatar">
                        <div class="author-info">
                            <div class="author-name">刘手工</div>
                            <div class="post-time">1周前</div>
                        </div>
                    </div>
                    
                    <div class="supply-content">
                        <h3 class="supply-title">手工编织饰品套装 - 耳环+项链</h3>
                        <p class="supply-description">
                            纯手工编织的饰品套装，采用天然材料制作，每一件都是独一无二的艺术品，适合日常佩戴或作为礼物。
                        </p>
                        
                        <div class="supply-stats">
                            <div class="stat-item">
                                <i class="fas fa-eye"></i>
                                <span>1.2k 浏览</span>
                            </div>
                            <div class="stat-item">
                                <i class="fas fa-comment"></i>
                                <span>78 评论</span>
                            </div>
                        </div>
                    </div>
                    
                    <div class="supply-actions">
                        <button class="action-btn" id="like4">
                            <i class="far fa-heart"></i>
                            <span>215</span>
                        </button>
                        <button class="action-btn" id="save4">
                            <i class="far fa-bookmark"></i>
                            <span>收藏</span>
                        </button>
                    </div>
                </div>
                
                <!-- 网格卡片3 - 无图 -->
                <div class="supply-card grid-card no-image-card">
                    <div class="supply-author">
                        <img src="https://picsum.photos/100/100?random=105" alt="陈翻译的头像" class="author-avatar">
                        <div class="author-info">
                            <div class="author-name">陈翻译</div>
                            <div class="post-time">2天前</div>
                        </div>
                    </div>
                    
                    <div class="supply-content">
                        <h3 class="supply-title">专业英语翻译服务 - 文档/网站本地化</h3>
                        <p class="supply-description">
                            提供专业英语翻译服务，擅长技术文档、网站内容和商业合同翻译。英语专业八级，5年翻译经验，保证翻译质量和专业性。
                        </p>
                        
                        <div class="supply-stats">
                            <div class="stat-item">
                                <i class="fas fa-eye"></i>
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